Horn with intermediate tube network enlarged in inner diameter

Abstract

A full-double French horn comprises a mouth piece, a front tube member, an intermediate tube network associated with valves, a rear tube member and a bell for defining a vibrative column of air, and the inner diameter of the intermediate tube network affects fortissimo sounds and low-pitched sounds, wherein the inner diameter of the intermediate tube network ranges from 12.8 millimeters to 13.5 millimeters so as to improve the fortissimo and low-pitched sounds without sacrifice of timbre and a good feeling in the blowing.

What is claimed is: 
     
       1. A horn for producing a sound through vibrations of a column of air, comprising: a) a mouth piece where a player buzzes;   b) a front tube means connected at one end thereof with said mouth piece, and defining a first wind passage increased in diameter from said one end toward the other end thereof;   c) an intermediate tube means connected at one end thereof with the other end of said front tube means, and defining a second wind passage having a constant diameter ranging from 12.8 millimeters to 13.5 millimeters;   d) a rear tube means coupled at one end thereof with the other end of said intermediate tube means, and defining a third wind passage increased in diameter from said one end toward the other end thereof; and   e) a bell means coupled with the other end of said rear tube means, and defining a fourth wind passage for diffusing said sound, said first, second, third and fourth wind passages defining said column of air.   
     
     
       2. A horn as set forth in claim 1, in which said intermediate tube means comprises a plurality of first change-over valves, and defines a plurality of wind sub-passages respectively assigned to key notes and selectively conducted with said first and third wind passages by means of said plurality of first change-over valves. 
     
     
       3. A horn as set forth in claim 2, in which a plurality sets of second valves are respectively provided for said plurality of wind sub-passages for changing the pitch of said sound. 
     
     
       4. A horn as set forth in claim 3, in which said plurality of wind sub-passages are equal in diameter.